CYLINDER FULL KIT 58MM YAMAHA YZ 125 97-04, ATHENA P400485100029 144CC BIG BORE, (Piston included)

Athena Big Bore Cylinder Kit 144cc for Yamaha YZ 125

Enhance the performance of your Yamaha YZ 125 with this Athena Big Bore Cylinder Kit. Engineered by Athena's dedicated R&D Department in Italy, this kit features a 58mm bore diameter, increasing the displacement to 144cc. The cylinder is coated with Athena's proprietary 'Motor-Nicksil,' a nickel-silicon coating designed for optimal smoothness and superior wear resistance.

This high-performance kit guarantees a noticeable increase in power across the entire rev range while maintaining the reliability of original components. All parts within the kit are meticulously designed and tested to withstand extreme temperatures, pressures, and stresses.

Key Features:

• Increased Displacement: 144cc
• Bore Diameter: 58.00 mm
• Coated Cylinder: Motor-Nicksil for enhanced durability
• High-Quality Aluminum Cylinder
• Includes Cylinder Head
• Complete Piston Kit: Piston, piston pin, and rings
• All Necessary Gaskets Included
• Compression Ratio: 14.0:1
• Designed for high temperatures, pressures, and stresses
• Can be installed without modifications to the crankcase
• Engineered and tested by Athena technicians

Technical Specifications:

• Bore Diameter: 58.00 mm
• Compression Ratio: 14.0:1
• Displacement: 144 cc
• Net Weight: 1.50 Kg